Coal-recording device.



A. W. DODGE.

' COAL RECORDING DEVICE. APPLICATION PI'LED 12.21, 1013.

1, 1 21,234. Patented Dec. 15, 1914.

wait. 9'. FORGE, OF TWO HELBIBOBS, MINNESOTA.

COAL-RECORDING DEVICE.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed'llpril 21, 1913. SerialNo. 762,589.

recording device for the fuel consumed insuch furnaces. L

The invention is particularly adapted for u e on locomotives, whereby a record is made of the amount of coal consumed in the furnace and fed through the furnace-door. T he device in its preferred form consists in a recording gage which shall graphically show the steam. pressure in the boiler over a period of time, the recording chart having time divisions; a counting device adapted to show the number of actuations, and an additi nal marking device co-iiperating with the steam-pressure recording chart, the countin and marking devices being operatively mooted. to the furnace-door, whereby each thereof is actuated when the door is opened sed. It is the custom of the fireman to the furnace-door to remain open only when single shovel ,of coal is tied to the furnace; therefore, t-he counting device will record the number of times the door is opened, and, likewise, the;number of shovels of coal ted to the furnace. By obtaining the average weight of coal per shovel the amount of coai fed to the furnace is readily determined. The Inarkingdevices for indicating graphically on the steam-pressure recordingchart will furnish on one chart a,

record as to the coal fed to the furnace, the pre ire or steam at such time, and the mint of coal consumed over a given pe- I it. Fhe invention will be more readily understood by reference to the accompanying drawingh, wherein, Y

Figure l is an end elevation of a locomoboiler end-sheet having my novel deapplied thereto; is enlarged .ii of a recording chart having a. record or steam pressures and fuel feed over a period of six hours; Fig. 3 is a view of a form of chart which may be employed in place of that shown in Fig. 2, such chart being in the form a continuous roll, and Fig. 4 is a detail plan view of the actuating mechanism for the counting and marking devices.

Referring more particularly to the drawings, it will be understood that in the endsheet 10 of a locomotive boiler furnace, is a fuel door 11 of the well-known type. On the end-wall is any common or preferred form of a steam-pressure recording gage 12, shown as adapted to accommodate a circular chart. This chart is shown enlarged in Fi 2 and is divided into six spaces, each space representing one hour in time. The various steam-pressures are arranged radially, on the chart and the recording-pencil A, indicated in Fig. 1 makes a continuous mark 13, Fig. 2 which shows graphically pressures at different times. I? ear the margin'of the chart is provided a space 1% within which marks may be made indicating the opening of the furnace-door. Mechanism by which such marking may be accomplished may consist of a lever 15 fulcrumed at 16 and normally pressed outwardly by a coil-spring 17. A countingoevice 18 is also provided on the front-wall, this counting-device being actuated by a similar lever 19 also forced out wardly by the spring 17. 'The door is provided with an upstanding lug 20 adapted contact the levers 15, 19, and actuate the same. It will be seen that when the door is open the spring 17 forces the lever 15 outward, bringing its free end carrying the marking pencil into contact with the chart, whereby the marks 21, shown in Fig. 2, are made. 'The long mark in the space ls indi cated at 22 shows'that the door was left open duringa period of time for the reason that the steam-pressure was raised for some reason, the attendant realizing the necessity for cooling down the furnace.

The construction of the chart shown in Fig. 3 is identical in principle to that shown in Fig. 2. The line indicates the steampressures, the chart being divided lnto spaces corresponding to hours. A space 24 accommodates the marking indicating the consumption of fuel.

I have shown in the accompanying drawings only one form of the device and typical performance sheets. It is evident, however,

that the device might take many other forms and I do not, therefore, Wish to limit myself to any form of construction other than that to which I am limited by the scope of my claims.

I claim:

1. In a device of the class described, the combination of a steam boiler furnace having a door,. a steam pressure chart, and means operable by the furnace door for in Cll iting each actuation of said furnace door onlhc steam pressure chart, substantially as described.

' 2. In a device of the class described, the combination of a steam boiler furnace havinga door, a steam pressure chart, a counting-device, and means operable by the movement of the furnace door for actuating said counting-(1e vi cc and for indicating each actuation of said furnace door on the chart, substantially as described.

3. In a device of the class. described, the combination of a boiler, a furnace. having a door, a steam pressure recorder including a chart, a counting device, and means operable by the swinging of said furnace-door for actuating said counting device and for graphically indicating each opening movement of said door on the said chart, substantially as described.

4. A recording device comprising a steam pressure recorder including a chart and a marker actuated by steam pressure, another marker for cooperation with the chart, and means for application to a 'urnace door for actuating the said other marker to indicate upon the chart the openings and closings of the door.

5. The combination With the fuel door of a steam boiler furnace and the chart of a steam pressure recorder, of a marker in no operative relation with the chart and also in cooperative relation. with the dc-or'for actuation thereby.

6. The combination with the fuel door of a steam boiler furnace and the chart of a steam prcssl'lre recorder, said chart being provided with time graduations and pressure graduations, of a marker cooperating with the time graduation portion of the chart and also cooperating with. the fuel door for actuation thereby.

ASA N. DODG I,

itnesses Enwann H. VJmnoat,

ALEX M. GOW. 

